Lock



April 7, 1925.

C. LEDlN LOCK Filed Sept. '7, 1923 Y han@ Apr. 7, 1925.

UNITED s-'rA'ne-:sv

Cn'Anns LEDIN, vor sT'Alnronn, CONNECTICUT, ArssIeNoa To' THE YALE a TowNn IANUFACTURING COMPANY, lor' STANFORD, CONNECTICUT.

LOCK.

Application filed September 7,., 1923.A Serial No. 661,417.

. 'To all whom it may` concern.'

Be it known that I, CHARLES LEDIN, a citizen of the United States, and resident of Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Locks; and I do hereby declare the following to be afull, clear, and exact description of the invention7 such as will enable others skilled in the art to which it appertains to make and use 'the same.

This invention relates, to improvements in locks and latches andfmore particularly` to the construction and manner of coupling theinside. knob fora door lock or latch with the bolt Operatin spindle.

Attempts have een made by burglars to operate locks having inside knobs, by reaching thrugha transom over the door and lower a knotted cordin a manner to engage the inside knob and turn the same to effect retracting of the bolt.-

An ob]ect of my presentinvention is to couple the knob tothe knob spindle in such manner that it shall be normally loose or disconnected fr-Om` operative relation to the spindle and thus prevent the latter from being turned by an unau'thorized person in ,the manner above described, but which may the knob is 'gras and operated under normal conditions y rsons having a right to unlock the door flibm the inside.

With this and other objects in view, the invention consists in certain novel features of construction as hereinafter set forth and pointed out in the claims.

In the accompanying drawings,-

Figure 1 is a face view of a lock structure to which my improvements may be applied. l

Figure 2 is a A view partly in side elevabe operatively (eigiled tothe spindle when l tion and partly in section showing the knob uncoupled lfrom the spindle.

Figure 3 is Aa sectional view showing the knob Coupled in operative relation the"4 spindle. l

Figure 4 isa view in section-onv the line 4--4'of Figure2. l' I Figure 5,. is a sectional view on the line 5 -5 of Figure 2.

Figure 6 is a view in elevationk of' the knob and the memberwhich is adapted to connect it with the' lock spindle, and

Figures 7 and 8 illustrate a modification.

In the drawings I have shown ,the casing 1 of a rim lock and the spindle for the inside knob and for imparting movement to the operating mechanism for the bolt 2., as shown at 3. The neck portion 4 yof a tubular memberl 5 (which latter projects beyond the casing 1 and is. provided at its free end with a plurality of teeth; or fingers 6) is mounted on the spindle 3 and provided at its inner end with a notch 7 to receive a lug 8 on a disk 9,-said inner end of the neck portion 4 of member 5 being also flanged as at 10 to engage the inner face of said disk. The disk 9 is provided with a notch 11 which receives a in 12 projectby a hollow buttonl member 17 having a' flange 18 to engage under an inwardly proecting flange 19 at the outer end of the nob shell, in which position the button member is normally retained by the action of a spring 20. The hollow button member 17 is provided at its inner end with a plurality of perforations 21 to receive the ngers 6 on the menlber 5 when the button member is depressed. The button member 17 is also provided with` an annular series of teeth 22 to engage similar teeth 22a within the knob shell.

When the parts are in the position shown in Figure 2, the knob will be freely rotatable and cannot be operated in the unauthorized manner hereinbefore mentioned to turn the lock spindle and withdraw the bolt, but when the button member 17 is de ressed by the thumb ofthe operator, said utton member will receive the fingers 6 of the member 5 but as the tubular shank 13 of the knob shell 14 turns freely on the tubular member 5,

ton member 17 is forced inward still farther to also connect it with the shank 13 by means of the teeth 22 and 22, In other words the button member forms an intermediate the lock cannot be operated until thebut` coupling member to operatively connect the loose knob 14 with the tubular member 5.

In 'the modified construction shown in Figures 7 and 8, the shank portion 23 of the knob is connected with the disk 9 in a man- -ner substantially such as hereinbefore described for connecting the member with said disk. The body portion 24 of the knob is made hollow and provided at its free end with notches 25 to receive fingers orprojections 26 on a disk 27 secured to the head member 28 of the knob when said head member is depressed. The head member 28 of the knob and the disk 27 carried thereby are normally held out of operative relation to the body portion of the knob by the action of a spring 29. With this construction, the body rtlon of the knob is normally in operative relation to the lock spindle and in order to prevent the unauthorized turning of the body portion of the knob by means of a knotted cord said body portion of the knob is surrounded by a freely rotatable sleeve 30.

Having fullydescribed my invention what I claim as, new and desire to secure by Let.- t'ers-Patent, is:

1. The combination with a lock spindle and a member operatively connected therewith, 'of 'a knob shell rotatabl mounted on said member and means carrie by said knob shell for operatively coupling the same to said member.

2. The combination with a lock spindle, of a member o ratively connected therewith and provi ed at its free end with a tin r, a knob shell rotatably mounted on sai member,l a button member carried by and forming part of the knob, said button essere@ knob shell rotatably mounted on said member and en ging the same to prevent 1ongitudinal dlsplacement of said knob shell, a button member disposed in said shell and having holes to receive said fingers, means for coupling said button member to the knob shell, and a spring normally`holdin said button member out of operative relation to Vsaid first mentioned member.

4. The combination with a lock spindle, of a member o ratively connected therewith and provide at its free end with fingers, a knob shell rotatably mounted on said member, a button member disposed in said shell and having holes to recelve said fingers, a spring normally holding` said button member out of operative relation to said'first mentioned member, and teeth on said button member to engage similar vteeth in the knob shell when the button member is depressed.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

CHARLES LEDIN.

Vitnesses: Y v

-WILLIAM H. DoNALDsoN, CHARLES A. Bz'mRY. 

